The cosmology is infinitely dimensional:
There is a higher order infinite number of universes with different forms of physics, each universe having their own infinite parallel dimension universes:
And the Time Vortex is infinitely leveled
The guardians are at the pinnacle of the cosmology described above:
They are beings that can do anything in the Omniverse
Said omniverse is connected to Marvel (Look at the bottom panel in the middle, there is Spiderman)
The Toymaker is one of them, the Crystal Guardian, and in fact he can fuck with the others quite well: